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For sale is a Star SU HB-110 Tool L-6234-900-008 743231909 Rev A 19LH. Item: Star SU industrial tool. Markings include: STAR SU 12-18-06 HB-110, L-6234-900-008, 743231909 REV.A. Additional text: HOLE #228 / 248, 1ST PASS, OP-#100, STA. 19LH. Features: long shank metal body with hex end and protective caps. Comes with a blue plastic storage tube. Assumption: appears to be a precision hole-finishing/reaming tool intended for left-hand rotation (19LH) and first-pass operations. Ideal for replacing a matching tool in a production or maintenance setup where these exact specs are required.